Domain Statistics
When you use a DOMAIN statement to request a domain analysis, the procedure computes the requested statistics for each domain.
For a domain , let be the corresponding indicator variable:
Let
The requested statistics for variable in domain are computed by using the new weights .
Domain Mean
The estimated mean of in the domain is
where
The variance of is estimated by
where if ,
and if ,
Domain Total
The estimated total in domain is
and its estimated variance is
where if ,
and if ,
Domain Ratio
The estimated ratio of to in domain is
and its estimated variance is
where if ,
and if ,
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